package com.example.t470p.facechecktickets.DynamicFaceMatch.utils;

import android.annotation.SuppressLint;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.util.Base64;
import android.util.Log;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

import static android.content.ContentValues.TAG;

@SuppressLint("NewApi")
public class AppUtil {
  /**
   * bitmap转为base64
   *
   * @param bitmap
   * @return
   */
  public static String bitmapToBase64(Bitmap bitmap) {

    String result = null;
    ByteArrayOutputStream baos = null;
    try {
      if (bitmap != null) {
        baos = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);

        baos.flush();
        baos.close();

        byte[] bitmapBytes = baos.toByteArray();
        result = Base64.encodeToString(bitmapBytes, Base64.NO_WRAP);
      }
    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      try {
        if (baos != null) {
          baos.flush();
          baos.close();
        }
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
    return result;
  }

  public static String getPath(final Context context, final Uri uri) {

    final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

    // DocumentProvider
    if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
      // ExternalStorageProvider
      if (isExternalStorageDocument(uri)) {
        final String docId = DocumentsContract.getDocumentId(uri);
        final String[] split = docId.split(":");
        final String type = split[0];

        if ("primary".equalsIgnoreCase(type)) {
          return Environment.getExternalStorageDirectory() + "/" + split[1];
        }
      }
      // DownloadsProvider
      else if (isDownloadsDocument(uri)) {

        final String id = DocumentsContract.getDocumentId(uri);
        final Uri contentUri = ContentUris.withAppendedId(
            Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));

        return getDataColumn(context, contentUri, null, null);
      }
      // MediaProvider
      else if (isMediaDocument(uri)) {
        final String docId = DocumentsContract.getDocumentId(uri);
        final String[] split = docId.split(":");
        final String type = split[0];

        Uri contentUri = null;
        if ("image".equals(type)) {
          contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
        } else if ("video".equals(type)) {
          contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
        } else if ("audio".equals(type)) {
          contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
        }

        final String selection = "_id=?";
        final String[] selectionArgs = new String[]{split[1]};

        return getDataColumn(context, contentUri, selection, selectionArgs);
      }
    }
    // MediaStore (and general)
    else if ("content".equalsIgnoreCase(uri.getScheme())) {

      // Return the remote address
      if (isGooglePhotosUri(uri))
        return uri.getLastPathSegment();

      return getDataColumn(context, uri, null, null);
    }
    // File
    else if ("file".equalsIgnoreCase(uri.getScheme())) {
      return uri.getPath();
    }

    return null;
  }

  public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {

    Cursor cursor = null;
    final String column = "_data";
    final String[] projection = {column};

    try {
      cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
          null);
      if (cursor != null && cursor.moveToFirst()) {
        final int index = cursor.getColumnIndexOrThrow(column);
        return cursor.getString(index);
      }
    } finally {
      if (cursor != null)
        cursor.close();
    }
    return null;
  }

  /**
   * @param uri The Uri to check.
   * @return Whether the Uri authority is ExternalStorageProvider.
   */
  public static boolean isExternalStorageDocument(Uri uri) {
    return "com.android.externalstorage.documents".equals(uri.getAuthority());
  }

  /**
   * @param uri The Uri to check.
   * @return Whether the Uri authority is DownloadsProvider.
   */
  public static boolean isDownloadsDocument(Uri uri) {
    return "com.android.providers.downloads.documents".equals(uri.getAuthority());
  }

  /**
   * @param uri The Uri to check.
   * @return Whether the Uri authority is MediaProvider.
   */
  public static boolean isMediaDocument(Uri uri) {
    return "com.android.providers.media.documents".equals(uri.getAuthority());
  }

  /**
   * @param uri The Uri to check.
   * @return Whether the Uri authority is Google Photos.
   */
  public static boolean isGooglePhotosUri(Uri uri) {
    return "com.google.android.apps.photos.content".equals(uri.getAuthority());
  }

  public static Bitmap bitmapFactorySmall(Uri uri,int requestSize) {
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeFile(uri.getPath(), options);

    // 源图片的宽度
    options.inSampleSize = AppUtil.calculateInSampleSize(options, requestSize);
    Log.i(TAG, "inSampleSize:" + options.inSampleSize);

    // 使用获取到的inSampleSize值再次解析图片
    options.inJustDecodeBounds = false;
    return BitmapFactory.decodeFile(uri.getPath(), options);
  }

  public static Bitmap decodeFileToBitmap(String filePath,int requestSize) {
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeFile(filePath, options);

    // 源图片的宽度
    options.inSampleSize = AppUtil.calculateInSampleSize(options, requestSize);
    Log.i(TAG, "inSampleSize:" + options.inSampleSize);

    // 使用获取到的inSampleSize值再次解析图片
    options.inJustDecodeBounds = false;
    return BitmapFactory.decodeFile(filePath, options);
  }

  public static int calculateInSampleSize(BitmapFactory.Options options,
                                          int reqWidth) {
    // 源图片的宽度
    final int width = options.outWidth;
    int inSampleSize = 1;
    if (width > reqWidth) {
      // 计算出实际宽度和目标宽度的比率
      final int widthRatio = Math.round((float) width / (float) reqWidth);
      inSampleSize = widthRatio;
    }
    return inSampleSize;
  }
}
